(a) Describe the distinction between transverse andlongitudinal waves. Give an example of each type ofwave, describingthe disturbance in each case.
(b) Describe why the frequency of a wave perceived byan observer depends on her velocity.
(c) Ultrasound measurements in medicine are oftenconducted using wavelengths of 0.03 cm and can be used measureblood flow speeds via the Doppler effect. Given that the speedofsound in the body is 1550 m/s, what is the maximum frequencydifference between the transmitted and received signals for a bloodflow velocity of 13 cm/s.
